CA1089369A - Side port - rc engine - Google Patents
Side port - rc engineInfo
- Publication number
- CA1089369A CA1089369A CA252,789A CA252789A CA1089369A CA 1089369 A CA1089369 A CA 1089369A CA 252789 A CA252789 A CA 252789A CA 1089369 A CA1089369 A CA 1089369A
- Authority
- CA
- Canada
- Prior art keywords
- rotor
- chambers
- flanks
- rotation
- generally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/18—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/04—Charge admission or combustion-gas discharge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B2053/005—Wankel engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Rotary Pumps (AREA)
Abstract
Abstract of Disclosure Disclosed herein is a rotary internal combustion engine comprising a generally trochoid shaped housing including a pair of spaced generally parallel side walls, a generally triangularly shaped rotor supported within the housing for rotation about an axis perpendicular to the side walls, which rotor includes three generally identically shaped side flanks which define, in cooperation with the housing, respective chambers which rotate with the flanks and which vary in volume in accordance with such rotation. The side flanks each include an end which leads in relation to the direction of rotor rotation, an end which trails in relation to the direction of rotor rotation, and a length extending between the leading and trailing ends. In addition, one of the side walls includes a charge inlet port which selectively communicates with the chambers in response to rotor rotation, which extends arcuately relative to the rotor axis, and which includes a portion which terminally communicates with the chambers and which is located such that the portion is closed off from communication with the chambers by respective parts of the flanks, which parts are spaced from the trailing ends in the direction toward the leading ends at a distance of from about 35 to 70 percent of the flank length.
Description
~ ~9 3~ 9 Title SIDE PORT - RC ENGINE
_ventor RUSSELL J. VAN RENS
Background of the Invention The invention relates generally to rotary internal combustion engines and more particularly, to side inlet ports for such engines.
Summary of the Invention The invention provides a rotary internal combustion engine comprising a generally trochoid shaped housing includ-ing a pair of spaced generally parallel side walls, a generally triangularly shaped rotor supported within the housing for rotation about an axis perpendicular to the side walls, which rotor includes three generally identically shaped side flanks which define, in cooperation with the housing, respective chambers which rotate with the flanks and which vary in vol-ume in accordance with such rotation. The side flanks each include an end which leads in relation to the direction of rotor rotation, an end which trails in relation to the dir-ection of rotor rotation, and a length extending between the leading and trailing ends. In addition, one of the side walls includes a charge inlet por~ which selectively communicates with the chambers in response to rotor rotation, which extends arcuately relative to the rotor axis, and which includes a portion which terminally communicates with the chambers and which is located such that the portion is closed off from communication with the chambers by respective parts of the flanks, which parts are spaced from the trailing ends in the direction toward the leading ends at a distance of from about 35 to 70 percent of the flank length.
,~
A
~ . .
369 `:
One of the principal features of the invention is the provision of a rotary internal combustion engine which in-cludes a side inlet port and which has good running character-istics at idle speeds.
Another of the principal features of the invention is the provision of a rotary internal combustion engine includ-ing a side inlet port which is operative, just prior to closure of the port, to deliver incoming charge to a portion of the com-bustion chamber extending along a center part of the flank`of the rotor so as to improve idle running conditions by avoiding terminal supply of fuel to a corner-or end part of the combus-tion chamber and the consequent stratific,atio~ which results therefrom and which otherwise results in relatively poor idling conditions.
Other ~eatures and advantages of the embodiments'of , ,. . .,~ .
the invention will become known by reference to the followin~
general descr~ption, appended claims, and drawings.
The Drawings Fig. 1 is a schematic view of a prior rotary internal combustion engine.
Fig, 2 is a schematic view of a rotary internal com-bustion engine embodying various of the features of the invention.
Before explaining the embodiments of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrange-ment of the components set forth in the following description or illustrated in the drawings. The invention is capable Q,f other embodiments and of being practiced and carried out in various ways. Also it is to be understood that the phraseology and terminology employed herein is for the purpose of descrip-tion and should not be regarded as limiting.
A
. . .
~ 9 3~ 9 General Description A typical prior art side inlet port arrangement 11 for a rotary internal combustion engine is shown in Figure 1.
More specifically, Figure 1 schematically illustrates a rotary inl:ernal combustion engine 13 including a trochoid shaped housing 15 defined by two spaced and generally parallel walls 17 (only one shown), and a rotor 21 which is located within the housing 15, which is generally triangular in shape, and which includes three identically constructed side flanks 23 which, in coopera-tion with the housing, define respective chambers 25 which rotate with the flanks 23 and which vary in volume in response to such rotation.
One of the side walls 17 includes a side inlet port 31 arranged such that the port portion 33 which terminally communi-cates with the chambers 25 is located so as to be closed by parts41 of the rotor flanks 23 which are located generally ad;acent to the trailing end of such 1anks. Accordingly, the last increment of fuel entering into the rotating chambers 25 is located generally in the corners of such chambers ~7ith the re-sult that poor running conditions can occur at idle speeds.
As shown, the parts 41 which close off the-~erminal ~' portions 33 are located at a distance A from the trailing end of the flank, which distance A is about 12 1/2 percent of the flank length between the leading and trailing flank edges.
Shown in Fig. 2 of the drawings is a rotary in-ternal combustion engine 113 which includes a generally trochoid shaped housing 115 including a pair of spaced generally~
A
-, ~ 3 ~ 9 parallel side walls 117, only one of which is shown. The housing 115 also includes an outer wall 118 extending generally perpendicularly between the side walls 117.
Located within the housing 115 is a generally triangularly S shaped rotor 121 which is supported for rotation about an axis 120 perpendicular to the side walls 117 and parallel to the outer wall 118.
The rotor 121 includes three apices 122 and three ; generally identically shaped side flanks 123 which extend 10 between the apices 122 and which define, in cooperation with the housing 115, respective chambers 125 which rotate with the side flanks 123 and which vary in volume in accordance with such rotation. Each of the side flanks 123 includes an end 127 which leads in relation to the direction of 15 rotor rotation (indicated by the arrow 128), an end 129 which trails in relation to the direction of rotor rotation, and a length extending between the leading and trailing ends 127 and 129.
Located in one of the side walls 117 is a charge 20 inlet port 131 which selectively communicates with the chambers 125 in response to rotor rotation. The side inlet port 131 extends arcuately relative to the rotor axis 120 and includes a portion 133 which terminally communicates with the chambers 125 and which is located such that the 25 portion 133 is closed off from communication with the chambers 125 by respective central parts 141 of the flanks 123, which parts 141 are spaced from the trailing ends 129 in the direction toward the leading ends 127 at a distance of from about 3~ to 70 percent of the flank length. Thus, the major portion of , ,, - ~
;
~ 3~ 9 charge or fuel delivered through the inlet port 131 into the communicating chamber 125 is supplied along the central part 141 of the associated flank 123 and not toward the flank trailing end and into a corner of the chamber 125.
Such supply of the fuel along the central part 141 of one side of the chamber 125 permits relatively even idling operation as compared to the past when employing side inlet ports 31 arranged as shown in Fig. 1.
As shown in Fig. 2, the distance B represents-25 -percent of the flank length and the distance C represents 50 percent of the flank length. Thus, the parts 14L are located generally in a range spaced from the adjacent trailing end 129 at a distance of between 35 percent and 70 percent of the flar~
length. It is believed that locating the port 131 so that the part 141 is located toward the 70 percent end of the range will increase the smoothness of performance.
Various of the features of the invention are set -forth in the following claims.
_ventor RUSSELL J. VAN RENS
Background of the Invention The invention relates generally to rotary internal combustion engines and more particularly, to side inlet ports for such engines.
Summary of the Invention The invention provides a rotary internal combustion engine comprising a generally trochoid shaped housing includ-ing a pair of spaced generally parallel side walls, a generally triangularly shaped rotor supported within the housing for rotation about an axis perpendicular to the side walls, which rotor includes three generally identically shaped side flanks which define, in cooperation with the housing, respective chambers which rotate with the flanks and which vary in vol-ume in accordance with such rotation. The side flanks each include an end which leads in relation to the direction of rotor rotation, an end which trails in relation to the dir-ection of rotor rotation, and a length extending between the leading and trailing ends. In addition, one of the side walls includes a charge inlet por~ which selectively communicates with the chambers in response to rotor rotation, which extends arcuately relative to the rotor axis, and which includes a portion which terminally communicates with the chambers and which is located such that the portion is closed off from communication with the chambers by respective parts of the flanks, which parts are spaced from the trailing ends in the direction toward the leading ends at a distance of from about 35 to 70 percent of the flank length.
,~
A
~ . .
369 `:
One of the principal features of the invention is the provision of a rotary internal combustion engine which in-cludes a side inlet port and which has good running character-istics at idle speeds.
Another of the principal features of the invention is the provision of a rotary internal combustion engine includ-ing a side inlet port which is operative, just prior to closure of the port, to deliver incoming charge to a portion of the com-bustion chamber extending along a center part of the flank`of the rotor so as to improve idle running conditions by avoiding terminal supply of fuel to a corner-or end part of the combus-tion chamber and the consequent stratific,atio~ which results therefrom and which otherwise results in relatively poor idling conditions.
Other ~eatures and advantages of the embodiments'of , ,. . .,~ .
the invention will become known by reference to the followin~
general descr~ption, appended claims, and drawings.
The Drawings Fig. 1 is a schematic view of a prior rotary internal combustion engine.
Fig, 2 is a schematic view of a rotary internal com-bustion engine embodying various of the features of the invention.
Before explaining the embodiments of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrange-ment of the components set forth in the following description or illustrated in the drawings. The invention is capable Q,f other embodiments and of being practiced and carried out in various ways. Also it is to be understood that the phraseology and terminology employed herein is for the purpose of descrip-tion and should not be regarded as limiting.
A
. . .
~ 9 3~ 9 General Description A typical prior art side inlet port arrangement 11 for a rotary internal combustion engine is shown in Figure 1.
More specifically, Figure 1 schematically illustrates a rotary inl:ernal combustion engine 13 including a trochoid shaped housing 15 defined by two spaced and generally parallel walls 17 (only one shown), and a rotor 21 which is located within the housing 15, which is generally triangular in shape, and which includes three identically constructed side flanks 23 which, in coopera-tion with the housing, define respective chambers 25 which rotate with the flanks 23 and which vary in volume in response to such rotation.
One of the side walls 17 includes a side inlet port 31 arranged such that the port portion 33 which terminally communi-cates with the chambers 25 is located so as to be closed by parts41 of the rotor flanks 23 which are located generally ad;acent to the trailing end of such 1anks. Accordingly, the last increment of fuel entering into the rotating chambers 25 is located generally in the corners of such chambers ~7ith the re-sult that poor running conditions can occur at idle speeds.
As shown, the parts 41 which close off the-~erminal ~' portions 33 are located at a distance A from the trailing end of the flank, which distance A is about 12 1/2 percent of the flank length between the leading and trailing flank edges.
Shown in Fig. 2 of the drawings is a rotary in-ternal combustion engine 113 which includes a generally trochoid shaped housing 115 including a pair of spaced generally~
A
-, ~ 3 ~ 9 parallel side walls 117, only one of which is shown. The housing 115 also includes an outer wall 118 extending generally perpendicularly between the side walls 117.
Located within the housing 115 is a generally triangularly S shaped rotor 121 which is supported for rotation about an axis 120 perpendicular to the side walls 117 and parallel to the outer wall 118.
The rotor 121 includes three apices 122 and three ; generally identically shaped side flanks 123 which extend 10 between the apices 122 and which define, in cooperation with the housing 115, respective chambers 125 which rotate with the side flanks 123 and which vary in volume in accordance with such rotation. Each of the side flanks 123 includes an end 127 which leads in relation to the direction of 15 rotor rotation (indicated by the arrow 128), an end 129 which trails in relation to the direction of rotor rotation, and a length extending between the leading and trailing ends 127 and 129.
Located in one of the side walls 117 is a charge 20 inlet port 131 which selectively communicates with the chambers 125 in response to rotor rotation. The side inlet port 131 extends arcuately relative to the rotor axis 120 and includes a portion 133 which terminally communicates with the chambers 125 and which is located such that the 25 portion 133 is closed off from communication with the chambers 125 by respective central parts 141 of the flanks 123, which parts 141 are spaced from the trailing ends 129 in the direction toward the leading ends 127 at a distance of from about 3~ to 70 percent of the flank length. Thus, the major portion of , ,, - ~
;
~ 3~ 9 charge or fuel delivered through the inlet port 131 into the communicating chamber 125 is supplied along the central part 141 of the associated flank 123 and not toward the flank trailing end and into a corner of the chamber 125.
Such supply of the fuel along the central part 141 of one side of the chamber 125 permits relatively even idling operation as compared to the past when employing side inlet ports 31 arranged as shown in Fig. 1.
As shown in Fig. 2, the distance B represents-25 -percent of the flank length and the distance C represents 50 percent of the flank length. Thus, the parts 14L are located generally in a range spaced from the adjacent trailing end 129 at a distance of between 35 percent and 70 percent of the flar~
length. It is believed that locating the port 131 so that the part 141 is located toward the 70 percent end of the range will increase the smoothness of performance.
Various of the features of the invention are set -forth in the following claims.
Claims
1. A rotary internal combustion engine comprising a generally trochoid shaped housing including a pair of spaced generally parallel side walls, a generally triangularly shaped rotor supported within said housing for rotation about an axis perpendicular to said side walls, said rotor including three generally identically shaped side flanks which define,-in cooperation with said housing, respective chambers which rotate with said flanks and which vary in volume in accordance with such rotation, each of said flanks having an end which leads in relation to the direction of rotor rotation, an end which trails in relation to the direction of rotor rotation, and a length extending between said leading and trailing ends, and a charge inlet port which is located in one of said side walls, which selectively communicates with said chambers in response to rotor rotation, which extends arcuately relative to said rotor axis, and which includes a portion which terminally communicates with said chambers and which is located such that said portion is closed off from communication with said chambers by respective parts of said flanks, which parts are spaced from said trailing ends in the direction toward said leading ends at a distance of from about 35 to 70 percent of said flank length.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/586,266 US4229151A (en) | 1975-06-12 | 1975-06-12 | Side port - RC engine |
| US586,266 | 1975-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1089369A true CA1089369A (en) | 1980-11-11 |
Family
ID=24345038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA252,789A Expired CA1089369A (en) | 1975-06-12 | 1976-05-18 | Side port - rc engine |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4229151A (en) |
| CA (1) | CA1089369A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8480444B2 (en) * | 2009-10-15 | 2013-07-09 | Tracker Marine, L.L.C. | Rotary engine jet boat |
| CN103423021B (en) * | 2013-07-26 | 2015-08-26 | 江苏大学 | A kind of novel to spray rotator type external-combustion engine cylinder and to spray rotator type external-combustion engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2947290A (en) * | 1957-11-18 | 1960-08-02 | Nsu Werke Ag | Heat generating rotary internal combustion engine |
| US2988065A (en) * | 1958-03-11 | 1961-06-13 | Nsu Motorenwerke Ag | Rotary internal combustion engine |
| US3097632A (en) * | 1959-04-17 | 1963-07-16 | Nsu Motorenwerke Ag | Rotary internal combustion engine and method of operation thereof |
| DE1151978B (en) * | 1961-03-14 | 1963-07-25 | Nsu Motorenwerke Ag | Rotary piston internal combustion engine, in particular rotary piston internal combustion engine |
| DE1175942B (en) * | 1961-06-13 | 1964-08-13 | Nsu Motorenwerke Ag | Air-cooled housing for rotary piston internal combustion engines |
| US3514235A (en) * | 1967-11-06 | 1970-05-26 | Yanmar Diesel Engine Co | Intake means for a rotary piston type engine |
| US3779214A (en) * | 1972-10-13 | 1973-12-18 | Outboard Marine Corp | Rotary combustion engine having a charge-cooled rotor and side and peripheral wall intake ports |
-
1975
- 1975-06-12 US US05/586,266 patent/US4229151A/en not_active Expired - Lifetime
-
1976
- 1976-05-18 CA CA252,789A patent/CA1089369A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4229151A (en) | 1980-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |